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Finding the Fourth Proportional to 27,712.53, 41,574.95 and 7,989.55

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Solution

The fourth proportional to 27,712.53, 41,574.95 and 7,989.55 is: 11,986.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,712.53 : 41,574.95 = 7,989.55 : x
  2. Step 2: Convert to fraction form
    27,712.53/41,574.95 = 7,989.55/x
  3. Step 3: Cross multiply
    27,712.53x = 41,574.95 × 7,989.55
  4. Step 4: Simplify right side
    27,712.53x = 332,165,141.77
  5. Step 5: Solve for x
    x = 332,165,141.77/27,712.53
  6. Step 6: Final answer
    x = 11,986.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.